Barbecue sauce will keep refrigerated for 3 weeks in a sterile airtight container.

Source:

Australian Gourmet Traveller
January 2012

For barbecue sauce, heat butter in a large saucepan over low heat, add onion and garlic and stir occasionally until very tender (10-15 minutes).
Increase heat to medium, add bourbon, bring to the simmer, then add remaining ingredients except lemon juice.
Reduce heat to low and stir occasionally until thick and dark (45-50 minutes).
Add juice, season to taste, pour into sterile containers or jars, seal and refrigerate to cool.